Not sure where to post this..."Part"...that can be installed without mods to acoustic, electric, whammy or no. Lots of videos and testimonials (first I've heard of this) and claiming to solve ALL tuning woes. guitarnutbuster.com Will let those folks here with posting skills to attach videos and pics and such. Looks kinda ugly. Kinda pricey, but it can be taken off and transferred to another guitar easily. So, you only need one. Have any of you tried this or know someone that has? Interest is piqued and might have to try it. Problems and necessity are the mother of invention.